Complete FRONT/REAR differential set with larger diff gears for increased traction. Provides perfectly matched engagement which provides more smooth operation much less opposition & significantly greater lifetime. Rubber-sealed composite differential housings feature metal inserts which are by hand precision ground after the molding procedure to ensure a perfect match no vibration. Differential interior gears are manufactured from pressed steel, temperature addressed, and machined for ultra-high precision and smooth operation. 46T large external bevel gear made of HUDY Steel, accuracy machined on a particular gear device. Diff outdrives are produced from world-renowned HUDY Spring metal, accuracy ground and heat addressed for high accuracy and ultra-long life. Outdrives are specially lightened to reduce rotating fat while staying super strong.